On Sat, 17 Apr 1999, Michael wrote:

        Hi,

> > > The reason is that on a master-slave setup, the slave disc is controlled
> > > by the master. If on a [hda-hdc]+[hdb-hdd] raid 0+1 the master device of
> > > *any* IDE controller fails, the slave will inmediatly fail also (I'd bet
> > > it surelly will happen if it's the slave who fails, so this statement
> > > could be widened to "if *any* disc fails"), rendering your raid 0+1
> > > inmediatly unusable, and making recovery thougher.
> > 
> Yeah, but even if the master fails, the data remains intact on the slave. 
> It can be rejumped and the array can be restarted in degraded mode. Been 
> there done that with a 3 disk raid 5 with 2 ide controllers. The drive 
> that failed was on the 2-disk controller and took the whole machine down 
> - of course. The data was fine, took about 10 minutes to get the thing 
> running again.

        Isn't downtime one of the things raid is designed for? That is at
least my point... 

        greetings,

*****---(*)---**********************************************---------->
Francisco J. Montilla              Systems & Network administrator
[EMAIL PROTECTED]      irc: pukka        Seville            Spain   
INSFLUG (LiNUX) Coordinator. www.insflug.org   -   ftp.insflug.org

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